If cells are grown in media containing amino acids labeled with radioactive nitrogen (15N), most of the radioactivity will be found in the cells'

A) DNA.
B) proteins.
C) phospholipids.
D) DNA and proteins.
E) DNA and phospholipids.


D

Biology & Microbiology

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A group of scientists that are studying the spread of Lyme disease suspect that it is spreading north due to movement of the tick vector brought about by climate change.  What application(s) below would assist with this study?

A. Geographic information systems B. Remote sensing and geographic information systems C. DNA microarrays D. Remote sensing E. DNA fingerprinting

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After chromosomes are duplicated, each of the new copies is called a _____

a. centromere b. sister chromatid c. replicate d. clone e. nucleosome

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When populations with separate ancestors adapt in similar ways to similar environmental constraints,

it is referred to as: a. biogeography. b. coevolution. c. convergent evolution. d. homologous evolution. e. natural selection.

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Cyanide binds with at least one molecule involved in producing ATP. If a cell is exposed to cyanide, most of the cyanide will be found within the _____

A) mitochondria B) peroxisomes C) lysosomes D) endoplasmic reticulum

Biology & Microbiology